Gear shaft
By installing a cooling cover and a coolant circulation system on the gear shaft of new energy vehicles, the problem of excessive deformation of the gear shaft is solved, and continuous cooling and service life are achieved.
Patent Information
- Application Number
- CN202421304856.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-10
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-06-10
AI Technical Summary
The gear shafts of new energy vehicles are prone to excessive deformation due to heat during use, which affects their service life and effect.
A tooth shaft with cooling function is designed. By installing a cooling cover outside the shaft body and setting a coolant inlet and outlet pipe on the cooling cover, the shaft body is cooled by using an external coolant conveying pipe, and the coolant is condensed. The equipment cools down circulatingly, thereby continuously cooling the gear shaft.
Effectively prevent deformation caused by heat from the tooth shaft, extend its service life and improve its use effect.
Smart Images
Figure CN222277192U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of new energy automobile accessories, and particularly relates to a gear shaft. Background Art
[0002] New energy vehicles refer to vehicles that use unconventional automotive fuels as their power source and integrate advanced technologies in vehicle power control and drive to form vehicles with advanced technical principles, new technologies, and new structures. New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid vehicles, fuel cell electric vehicles, and hydrogen engine vehicles.
[0003] The gear shaft is the core component of the air suspension of new energy vehicles. It plays the role of transmitting power. During the use of the gear shaft, its two ends will extend to the interior of the driving device and the driven device. During the driving process of the new energy vehicle, a large amount of heat will be generated inside the driving device and the driven device. The heat is transferred to the gear shaft, which can easily cause excessive deformation of the gear shaft due to heat, affecting its service life and use effect. Summary of the invention
[0004] The purpose of the utility model is to provide a gear shaft with a temperature reduction function in view of the above problems existing in the prior art.
[0005] The purpose of the utility model can be achieved through the following technical solutions: a gear shaft, including a shaft body, a plurality of spline grooves 1 are opened on one side of the shaft body, a plurality of spline grooves 2 are opened on the other side of the shaft body, a retreat groove 1, a retreat groove 2 and a retreat groove 3 are respectively opened on the outside of the shaft body and between the spline groove 1 and the spline groove 2, a cooling cover is sleeved on the top and bottom of the center of the shaft body, a coolant inlet pipe is installed on one side of the top of the cooling cover, a coolant outlet pipe is installed on the other side of the bottom of the cooling cover, a side of the coolant inlet pipe away from the cooling cover and a side of the coolant outlet pipe away from the cooling cover are connected with quick connectors, and both ends of the outside of the cooling cover are connected with semicircular connecting ring plates, and a plurality of connecting screw holes are opened through the semicircular connecting ring plates.
[0006] The gear shaft is provided with a cooling cover on the outside of the shaft body, and the quick connectors on the coolant outlet pipe and the coolant inlet pipe are connected with the quick connectors on the external coolant delivery pipe. During the operation of the new energy vehicle, the external coolant delivery pipe delivers coolant to the cooling cover through the coolant inlet pipe to cool the outside of the shaft body, and then the coolant is discharged into the external coolant delivery pipe through the coolant outlet pipe. After passing through the condensing equipment, the coolant is cooled and circulated, which is beneficial to the continuous cooling of the shaft body and prevents it from being greatly deformed by heat.
[0007] In the above-mentioned gear shaft, the length of the spline groove 1 is greater than the length of the spline groove 2, and the number of the spline grooves 1 is less than the number of the spline grooves 2. Through the cooperation of the spline grooves 1 and 2, it is convenient to connect the two ends of the shaft body with the splines of the external equipment, so that the shaft body plays a transmission role.
[0008] In the above-mentioned gear shaft, the undercut groove 1 is close to one side of the spline groove 1, and the undercut grooves 2 and 3 are close to one side of the spline groove 2. The cooperation of the undercut grooves 1, 2 and 3 facilitates the withdrawal of the machining tool during the machining of the gear shaft, which is beneficial to the machining of the gear shaft.
[0009] In the above gear shaft, both ends of the inner wall of the cooling cover are inlaid with sealed bearings, and the inner wall of the sealed bearing is movably sleeved on the outside of the shaft body. The connection between the cooling cover and the shaft body can be sealed by the sealed shaft to prevent the coolant from leaking from the gap between the cooling cover and the shaft body.
[0010] In the above-mentioned gear shaft, both ends of the upper and lower cooling covers on opposite sides are provided with sealing grooves, the inside of the sealing grooves are inlaid with sealing strips, the outside of the cooling cover and the outside of the semicircular connecting ring plate are connected to a connecting frame, a plurality of positioning bolts 1 are provided through the side of the upper and lower connecting frames close to the cooling cover, and a plurality of positioning bolts 2 are provided through the side of the upper and lower connecting frames close to the semicircular connecting ring plate. Through the cooperation of the sealing strip and the sealing groove, the connection between the upper and lower cooling covers can be sealed to prevent the overflow of the coolant.
[0011] In the above-mentioned gear shaft, the lengths of the undercut second and the undercut third are the same, the length of the undercut first is much longer than that of the undercut second and the undercut third, and the cooling cover is located between the undercut first and the undercut second.
[0012] Compared with the prior art, the utility model uses a cooling hood, a coolant outlet pipe, a sealed bearing, a coolant inlet pipe and a quick connector in coordination. The quick connectors on the coolant outlet pipe and the coolant inlet pipe are connected to the quick connectors on the external coolant delivery pipe. During the operation of the new energy vehicle, the external coolant delivery pipe transports coolant into the cooling hood through the coolant inlet pipe to cool the outside of the shaft body. Then the coolant is discharged into the external coolant delivery pipe through the coolant outlet pipe. After passing through the condensing equipment, the coolant is cooled and circulated, which is beneficial to the continuous cooling of the shaft body so that it will not be greatly deformed by heat. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the structure of the utility model.
[0014] Figure 2 This is a side view of the cooling cover structure of this utility model.
[0015] Figure 3 For this utility model Figure 2 A is an enlarged view of the middle image.
[0016] In the figure: 1. Spline groove one; 2. Back-off groove one; 3. Shaft body; 4. Cooling cover; 5. Coolant outlet pipe; 6. Back-off groove two; 7. Spline groove two; 8. Back-off groove three; 9. Sealed bearing; 10. Semicircular connecting ring plate; 11. Connecting screw hole; 12. Coolant inlet pipe; 13. Quick connector; 14. Sealing groove; 15. Sealing strip; 16. Connecting frame; 17. Positioning bolt one; 18. Positioning bolt two. DETAILED DESCRIPTION
[0017] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0018] like Figure 1 , Figure 2 and Figure 3 As shown, the gear shaft includes a shaft body 3, a plurality of spline grooves 1 are provided on one side of the outside of the shaft body 3, a plurality of spline grooves 2 7 are provided on the other side of the outside of the shaft body 3, a tool retreat groove 2 2, a tool retreat groove 2 6 and a tool retreat groove 3 8 are provided on the outside of the shaft body 3 and between the spline groove 1 and the spline groove 2 7, respectively, a cooling cover 4 is sleeved on the top and bottom of the center of the outside of the shaft body 3, a coolant inlet pipe 12 is installed on one side of the top of the top cooling cover 4, a coolant outlet pipe 5 is installed on the other side of the bottom of the bottom cooling cover 4, a side of the coolant inlet pipe 12 away from the cooling cover 4 and a side of the coolant outlet pipe 5 away from the cooling cover 4 are connected with a quick connector 13, and both ends of the outside of the cooling cover 4 are connected with a semicircular connecting ring plate 10, and a plurality of connecting screw holes 11 are penetrated through the semicircular connecting ring plate 10.
[0019] In actual manufacturing, the length of the spline groove 1 is greater than the length of the spline groove 2 7, and the number of the spline groove 1 is less than the number of the spline groove 2 7.
[0020] During actual manufacturing, the undercut groove 2 is close to one side of the spline groove 1, and the undercut groove 2 6 and the undercut groove 3 8 are close to one side of the spline groove 2 7.
[0021] In actual manufacturing, both ends of the inner wall of the cooling cover 4 are inlaid with sealed bearings 9 , and the inner wall of the sealed bearing 9 is movably sleeved on the outside of the shaft body 3 .
[0022] During actual manufacturing, sealing grooves 14 are provided at both ends of the opposite sides of the upper and lower cooling covers 4, and sealing strips 15 are embedded in the sealing grooves 14. The outside of the cooling cover 4 and the outside of the semicircular connecting ring plate 10 are connected to a connecting frame 16. A plurality of positioning bolts 17 are penetrated on one side of the upper and lower connecting frames 16 close to the cooling cover 4, and a plurality of positioning bolts 18 are penetrated on one side of the upper and lower connecting frames 16 close to the semicircular connecting ring plate 10.
[0023] In actual manufacturing, the lengths of the second undercut 6 and the third undercut 8 are the same, the length of the first undercut 2 is much greater than that of the second undercut 6 and the third undercut 8, and the cooling cover 4 is located between the first undercut 2 and the second undercut 6.
[0024] When the utility model is in use, the quick connectors 13 on the coolant outlet pipe 5 and the coolant inlet pipe 12 are docked with the quick connectors 13 on the external coolant delivery pipe. During the operation of the new energy vehicle, the external coolant delivery pipe delivers coolant to the cooling cover 4 through the coolant inlet pipe 12 to cool the outside of the shaft body 3, and then the coolant is discharged through the coolant outlet pipe 5 to the external coolant delivery pipe. After passing through the condensing device, the coolant is cooled and circulated, which is conducive to the continuous cooling of the shaft body 3 so that it will not be greatly deformed by heat. Through the connecting screw hole 11, it is convenient to use the connecting bolt to penetrate the connecting screw hole 11 to connect the semicircular connecting ring plate 10 to the equipment housing on both sides of the shaft body 3.
[0025] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.
Claims
1. A gear shaft, comprising a shaft body (3), characterized in that: A plurality of spline grooves (1) are provided on one side of the exterior of the shaft body (3), a plurality of spline grooves (7) are provided on the other side of the exterior of the shaft body (3), a first retreat groove (2), a second retreat groove (6) and a third retreat groove (8) are provided on the exterior of the shaft body (3) and between the first spline groove (1) and the second spline groove (7), respectively; a cooling hood (4) is sleeved on the top and bottom of the center of the exterior of the shaft body (3); a coolant inlet pipe (12) is installed on one side of the top of the top cooling hood (4), a coolant outlet pipe (5) is installed on the other side of the bottom of the bottom cooling hood (4); a side of the coolant inlet pipe (12) away from the cooling hood (4) and a side of the coolant outlet pipe (5) away from the cooling hood (4) are connected to quick connectors (13); both ends of the exterior of the cooling hood (4) are connected to semicircular connecting ring plates (10), and a plurality of connecting screw holes (11) are penetrated through the semicircular connecting ring plates (10).
2. A gear shaft according to claim 1, characterized in that: The length of the spline groove one (1) is greater than the length of the spline groove two (7), and the number of the spline groove one (1) is less than the number of the spline groove two (7).
3. A gear shaft according to claim 1, characterized in that: The tool retreat groove 1 (2) is located close to one side of the spline groove 1 (1), and the tool retreat groove 2 (6) and the tool retreat groove 3 (8) are located close to one side of the spline groove 2 (7).
4. A gear shaft according to claim 1, characterized in that: Both ends of the inner wall of the cooling cover (4) are inlaid with sealed bearings (9), and the inner wall of the sealed bearing (9) is movably sleeved on the outside of the shaft body (3).
5. The gear shaft according to claim 1, characterized in that: Both ends of the upper and lower cooling covers (4) on opposite sides are provided with sealing grooves (14), the interior of the sealing grooves (14) is inlaid with sealing strips (15), the exterior of the cooling cover (4) and the exterior of the semicircular connecting ring plate (10) are connected to a connecting frame (16), a plurality of positioning bolts (17) are provided through one side of the upper and lower connecting frames (16) close to the cooling cover (4), and a plurality of positioning bolts (18) are provided through one side of the upper and lower connecting frames (16) close to the semicircular connecting ring plate (10).
6. A gear shaft according to claim 1, characterized in that: The lengths of the second undercut groove (6) and the third undercut groove (8) are the same, the length of the first undercut groove (2) is much longer than the lengths of the second undercut groove (6) and the third undercut groove (8), and the cooling cover (4) is located between the first undercut groove (2) and the second undercut groove (6).